<template>
    <div>
        <!-- 图片上传组件辅助 -->
        <el-upload class="avatar-uploader quill-img" :action="uploadImgUrl" name="file" :headers="headers"
            :show-file-list="false" :on-success="quillImgSuccess" :on-error="uploadError"
            :before-upload="quillImgBefore" accept='.jpg,.jpeg,.png,.gif'></el-upload>

        <!-- 富文本组件 -->
        <quill-editor class="editor" v-model="content" ref="quillEditor" :options="editorOption" :disabled="enableEdit"
            @blur="onEditorBlur($event)" @focus="onEditorFocus($event)" @change="onEditorChange($event)"></quill-editor>
    </div>
</template>

<script>
    import {
        getToken
    } from '@/utils/auth'

    // 工具栏配置
    const toolbarOptions = [
        ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线
        ["blockquote", "code-block"], // 引用  代码块
        [{
            list: "ordered"
        }, {
            list: "bullet"
        }], // 有序、无序列表
        [{
            indent: "-1"
        }, {
            indent: "+1"
        }], // 缩进
        [{
            size: ["small", false, "large", "huge"]
        }], // 字体大小
        [{
            header: [1, 2, 3, 4, 5, 6, false]
        }], // 标题
        [{
            color: []
        }, {
            background: []
        }], // 字体颜色、字体背景颜色
        [{
            align: []
        }], // 对齐方式
        ["clean"], // 清除文本格式
        // ["link", "image", "video"]                       // 链接、图片、视频
        ["link","image"] // 链接、图片、视频
    ];
    import ImageResize from "quill-image-resize-module"; // 引用
    import { ImageDrop } from "quill-image-drop-module";
    import {
        quillEditor,
        Quill
    } from "vue-quill-editor";
    import "quill/dist/quill.core.css";
    import "quill/dist/quill.snow.css";
    import "quill/dist/quill.bubble.css";
    Quill.register("modules/imageDrop", ImageDrop);
    Quill.register("modules/imageResize", ImageResize); // 注册
    export default {
        props: {
            /* 编辑器的内容 */
            value: {
                type: String
            },
            /* 图片大小 */
            maxSize: {
                type: Number,
                default: 4000 //kb
            },
            enableEdit: {
                type: Boolean
            },
        },
        components: {
            quillEditor
        },
        data() {
            return {
                content: this.value,
                editorOption: {
                    theme: "snow", // or 'bubble'
                    placeholder: "请输入内容",
                    modules: {
                        toolbar: {
                            container: toolbarOptions,
                            handlers: {
                                image: function (value) {
                                    if (value) {
                                        // 触发input框选择图片文件
                                        document.querySelector(".quill-img input").click();
                                    } else {
                                        this.quill.format("image", false);
                                    }
                                }
                            },
                        },
                        imageDrop: true,   // 图片拖拽
                        imageResize: {     // 图片放大缩小
                            displayStyles: {
                                backgroundColor: "black",
                                border: "none",
                                color: "white"
                            },
                            modules: ["Resize", "DisplaySize", "Toolbar"]
                        }
                    }
                },
                uploadImgUrl: process.env.VUE_APP_BASE_API + "/common/upload", // 上传的图片服务器地址
                headers: {
                    Authorization: 'Bearer ' + getToken()
                }
            };
        },
        watch: {
            value: function () {
                this.content = this.value;
            }
        },
        methods: {
            onEditorBlur() {
                //失去焦点事件
            },
            onEditorFocus() {
                //获得焦点事件
            },
            onEditorChange() {
                //内容改变事件
                this.$emit("input", this.content);
            },

            // 富文本图片上传前
            quillImgBefore(file) {
                let fileType = file.type;
                if (fileType === 'image/jpeg' || fileType === 'image/png') {
                    return true;
                } else {
                    this.$message.error('请插入图片类型文件(jpg/jpeg/png)');
                    return false;
                }
            },

            quillImgSuccess(res, file) {
                // res为图片服务器返回的数据
                // 获取富文本组件实例
                let quill = this.$refs.quillEditor.quill;
                // 如果上传成功
                if (res.code == 200) {
                    // 获取光标所在位置
                    let length = quill.getSelection().index;
                    // 插入图片  res.url为服务器返回的图片地址
                    quill.insertEmbed(length, "image", process.env.VUE_APP_BASE_PATH + process.env.VUE_APP_BASE_API + res.url);
                    // 调整光标到最后
                    quill.setSelection(length + 1);
                } else {
                    this.$message.error("图片插入失败");
                }
            },
            // 富文本图片上传失败
            uploadError() {
                // loading动画消失
                this.$message.error("图片插入失败");
            }
        }
    };

</script>

<style>
    .editor {
        line-height: normal !important;
        /* height: 192px; */
    }

    .quill-img {
        display: none;
    }

    .ql-snow .ql-tooltip[data-mode="link"]::before {
        content: "请输入链接地址:";
    }

    .ql-snow .ql-tooltip.ql-editing a.ql-action::after {
        border-right: 0px;
        content: "保存";
        padding-right: 0px;
    }

    .ql-snow .ql-tooltip[data-mode="video"]::before {
        content: "请输入视频地址:";
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item::before {
        content: "14px";
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
        content: "10px";
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
        content: "18px";
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
        content: "32px";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item::before {
        content: "文本";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
        content: "标题1";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
        content: "标题2";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
        content: "标题3";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
        content: "标题4";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
        content: "标题5";
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
        content: "标题6";
    }

    .ql-snow .ql-picker.ql-font .ql-picker-label::before,
    .ql-snow .ql-picker.ql-font .ql-picker-item::before {
        content: "标准字体";
    }

    .ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
    .ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
        content: "衬线字体";
    }

    .ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
    .ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
        content: "等宽字体";
    }

    .ql-container,
    .ql-editor {
        min-height: 192px;
    }

</style>
